EXPERIMENT STATION BULLETINS. 



607 



tion of fruit the following season. Some growers do not remove the old 

 canes until winter or until the pruning is done early in the spring. It is 

 best to cut them out immediately after all the fruit is picked. They should 

 be removed from the patch and burned. Insects and diseases are in this 

 way better controlled and the new canes are provided with better condi- 

 tions for development. 



Black Rasp})erry. During the summer the new growth of the black rasp- 

 berry is pruned by pinching out the tips of the young growing canes when 

 they are about 18 to 24 inches high. This checks the terminal growth and 

 induces the development of low, stocky, well-branched plants which will 

 stand erect and need no support. Be sure to pinch back the canes as soon 

 as they have reached the desired height. In order to do this it is usually 

 necessary to go over the patch several times during the growing season as 

 all the canes do not appear at the same time. Weaker plants result if the 

 canes are allowed to grow bej^ond the desired height and cut back later. 

 In the spring the canes should be thinned out leaving only ?> to 5 strong 

 canes to each plant, and all lateral or side shoots cut back to 12 to 18 

 inches in length. 



Vh 



-Ciithbert red rnsiiborry. Rows too m-Mo nnd canes uot properly thinned. 



Red RaspT>erry. The pruning of the red raspberry consists of removing 

 all old canes at the close of the picking season and thinning out the new 

 growth. The new canes are not tipped back, but allowed to grow as they 

 will. Proper thinning and spacing of the new canes is important. Most 

 varieties produce suckers very freely from the underground stems and if 

 all are allowed to grow, the plants become crowded and the ground soon 



